One major reason it is so hard to find a cure for HIV is that it has the ability to hide itself in latent reservoirs. Researches have just found they can extract HIV DNA from the genome of living animals to keep the virus from spreading. The scientists were able to infect mice with a human sample and successfully extracted the HIV DNA. These scientists from the Lewis Katz School of Medicine at Temple University, were the first to be able to turn off replication of the virus. This is a huge discovery because even though there is no cure for HIV, we can at least keep it from spreading which in the long run could eliminate the virus from existence.